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https://github.com/mollyim/webrtc.git
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a81e9c82fc
This CL introduced 2 new macros that affect the WebRTC OBJC API symbols: - RTC_OBJC_TYPE_PREFIX: Macro used to prepend a prefix to the API types that are exported with RTC_OBJC_EXPORT. Clients can patch the definition of this macro locally and build WebRTC.framework with their own prefix in case symbol clashing is a problem. This macro must only be defined by changing the value in sdk/objc/base/RTCMacros.h and not on via compiler flag to ensure it has a unique value. - RCT_OBJC_TYPE: Macro used internally to reference API types. Declaring an API type without using this macro will not include the declared type in the set of types that will be affected by the configurable RTC_OBJC_TYPE_PREFIX. Manual changes: https://webrtc-review.googlesource.com/c/src/+/173781/5..10 The auto-generated changes in PS#5 have been done with: https://webrtc-review.googlesource.com/c/src/+/174061. Bug: None Change-Id: I0d54ca94db764fb3b6cb4365873f79e14cd879b8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173781 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31153}
123 lines
4.2 KiB
Objective-C
123 lines
4.2 KiB
Objective-C
/*
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* Copyright 2015 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import "RTCCameraPreviewView.h"
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#import <AVFoundation/AVFoundation.h>
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#import <UIKit/UIKit.h>
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#import "RTCDispatcher+Private.h"
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@implementation RTC_OBJC_TYPE (RTCCameraPreviewView)
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@synthesize captureSession = _captureSession;
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+ (Class)layerClass {
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return [AVCaptureVideoPreviewLayer class];
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}
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- (instancetype)initWithFrame:(CGRect)aRect {
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self = [super initWithFrame:aRect];
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if (self) {
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[self addOrientationObserver];
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}
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return self;
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}
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- (instancetype)initWithCoder:(NSCoder*)aDecoder {
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self = [super initWithCoder:aDecoder];
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if (self) {
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[self addOrientationObserver];
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}
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return self;
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}
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- (void)dealloc {
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[self removeOrientationObserver];
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}
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- (void)setCaptureSession:(AVCaptureSession *)captureSession {
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if (_captureSession == captureSession) {
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return;
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}
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_captureSession = captureSession;
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[RTC_OBJC_TYPE(RTCDispatcher)
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dispatchAsyncOnType:RTCDispatcherTypeMain
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block:^{
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AVCaptureVideoPreviewLayer *previewLayer = [self previewLayer];
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[RTC_OBJC_TYPE(RTCDispatcher)
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dispatchAsyncOnType:RTCDispatcherTypeCaptureSession
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block:^{
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previewLayer.session = captureSession;
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[RTC_OBJC_TYPE(RTCDispatcher)
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dispatchAsyncOnType:RTCDispatcherTypeMain
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block:^{
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[self setCorrectVideoOrientation];
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}];
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}];
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}];
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}
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- (void)layoutSubviews {
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[super layoutSubviews];
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// Update the video orientation based on the device orientation.
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[self setCorrectVideoOrientation];
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}
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-(void)orientationChanged:(NSNotification *)notification {
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[self setCorrectVideoOrientation];
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}
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- (void)setCorrectVideoOrientation {
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// Get current device orientation.
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UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
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AVCaptureVideoPreviewLayer *previewLayer = [self previewLayer];
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// First check if we are allowed to set the video orientation.
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if (previewLayer.connection.isVideoOrientationSupported) {
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// Set the video orientation based on device orientation.
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if (deviceOrientation == UIInterfaceOrientationPortraitUpsideDown) {
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previewLayer.connection.videoOrientation =
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AVCaptureVideoOrientationPortraitUpsideDown;
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} else if (deviceOrientation == UIInterfaceOrientationLandscapeRight) {
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previewLayer.connection.videoOrientation =
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AVCaptureVideoOrientationLandscapeRight;
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} else if (deviceOrientation == UIInterfaceOrientationLandscapeLeft) {
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previewLayer.connection.videoOrientation =
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AVCaptureVideoOrientationLandscapeLeft;
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} else if (deviceOrientation == UIInterfaceOrientationPortrait) {
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previewLayer.connection.videoOrientation =
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AVCaptureVideoOrientationPortrait;
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}
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// If device orientation switches to FaceUp or FaceDown, don't change video orientation.
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}
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}
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#pragma mark - Private
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- (void)addOrientationObserver {
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(orientationChanged:)
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name:UIDeviceOrientationDidChangeNotification
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object:nil];
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}
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- (void)removeOrientationObserver {
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[[NSNotificationCenter defaultCenter] removeObserver:self
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name:UIDeviceOrientationDidChangeNotification
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object:nil];
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}
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- (AVCaptureVideoPreviewLayer *)previewLayer {
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return (AVCaptureVideoPreviewLayer *)self.layer;
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}
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@end
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